GPS accuracy degrades randomly - Galaxy S 5 Q&A, Help & Troubleshooting

Hi,
I started to have an accuracy problem with my GPS. I have quite a quick GPS fix with more than 20 satellites in view and more the ten in use with good signal quality but every two-three minutes the accuracy drops from 3-10 meters to 50-100 meters and after several minutes it returns to high accuracy. I never lose GPS fix, only the accuracy changes.
I was running original G900F 5.1 ROM, tried custom ROMs, reset AGPS settings, updates to NTP server with TopNTP.
Thanks for help.

Related

Google maps gps slow to update

I have an iBlue 737 successfully paired to the HTC and have it playing nice with google maps, but the gps doesn't update, and if it does, it's over the span of 5-10 minutes. I could be blocks away, by then. Is that normal?
Other then the fact it usually shows me in a totally opposite place then I really am, it updates very fast for me. So far I am 50/50 on actually being in the circle around the needle. lol
Mine will update for a couple of seconds, then stop. Sometimes it reacquires, sometimes it doesn't. Usually, when it does, reacquire, it's 5-10 minutes down the road. If I turn the gps on and off, it updates immediately, then continues to track for about 30 seconds. After that, it stops and the dot stays at it's last location.

GPS performance report overseas

Alright... with all the previous discussions about valid gps results, here's my report-not that anyone is going to take this to mean anything . I recently flew from LAX - TPE. 14 hour flight, phone was turned off in LAX, with airplane mode on. Phone turned back on after 24+ hours, airplane mode, so no questions about pulling data from the network.
Cold start (obviously) into GPS Test, 7k+ miles from og location, lock in under 30 seconds. Fire up wifi, connect to hotel network, Google Maps up to verify location, and dead on.
DK28.
Awesome. Yes froyo has def. Improved my gps a lot. I couldn't even get a lock in my house and now I get a lock within 1meter.

[Q] GPS takes forever to lock on.

How long does your GPS take to lock on. Mine takes around 15 - 20 seconds. MAke sure to turn wifi location off so you can accurately measure the time.
Thanks.
RacecarBMW said:
How long does your GPS take to lock on. Mine takes around 15 - 20 seconds. MAke sure to turn wifi location off so you can accurately measure the time.
Thanks.
Click to expand...
Click to collapse
My phone didn't get an accurate reading over 3G/GPS for the first few days of use. When it did work, my exact location would be off by about 1.5 miles. Magically, out of no where, it just started working and now finds my exact location in less than five seconds.
my GPS is awsome, takes only a few seconds to get a lock, even indoors
15 seconds is nothing.
My GPS took about 1 minute to lock on the other day which was disappointing considering the X10 would lock on pretty much instantly.
Although it might have been because it was overcast. I just tried it indoors and it locked on much quicker than the other day.
Mine won't lock on at all if I have wi-fi and mobile data off

A500 GPS Accuracy

My A500 can only get down to 10 meter with a clear view with 7/7 sat fix, however my phone (HTC Desire) can be as low as 3-4 meter.
What's yours? Thx
Running what program. On GPS Essentials and doing geocacheing I have seen 3 meters and maybe better.

Change of router affects battery?

Phone: Mi A1 Stock - Oreo 8.0 April update
I consistently charge the phone when battery level is around 30% to around 85%.
I recently changed ISP's and a new router was installed. It is a Huawei dual 2.4/5GHz fiber router that replaces an old Huawei single band fiber router and has 2 separate SSID's.
Since that change, my battery life has taken a significant hit and drains MUCH quicker than it used to. Where it would normally last 2-3 days, it now lasts about a day. Battery drain during screen off time is almost twice as fast as previously. For instance, I charged the phone to 90% Yesterday, less than 21 hours ago. Battery is now at 53% with only 21 minutes of SOT!
I've tried:
Staying connected to the 2.4GHz band
Staying connected to the 5GHz band
Turning off the Always On setting for WiFi that I have always had on
Nothing above seems to impact this situation in any way. If anyone has any ideas or solution for this, I would appreciate the help.
Regards,
Maybe the reason is a different transmit power and receiver sensitivity of the router. Maybe your new route requires a higher transmission energy than you old router.
In addition, some routers allow to use 2 channels in parallel, which would also mean higher energy consumption
I am assuming it is something like that. The signal strength is the same on both: full signal. The new router is considerably faster than the old one in throughput, even on the 2.4GHz band. But wow! Now I am thinking that the A2 needs a bigger battery! I really did not expect this type of hit from changing routers! Might be something for others to consider if they are planning a change.
Thanks for the response.
you updated the firmware on the router?
Duplicate post deleted
riccetto80 said:
you updated the firmware on the router?
Click to expand...
Click to collapse
As far as I can tell by Huawei's screwed up website, the router has the latest firmware. Huawei's website is NOT user friendly and it took me quite a while to even find the firmware area! REALLY bad design for a customer website!
But thanks for the suggestion. It did make me look it up, or at least try to.
@KB_Thailand: you could consider using some custom-firmware for your router.
Typically you would gain more options in configuring your router
Even with the standard firmware, you could play around with various options to find out which configuration and option suit you best
then try to change the wireless band, maybe other router automatically used a less crowded band, this new one not do this and you end up use a band who is used from many people who live too close to you.
Thanks to both @riccetto80 and @Tiemichael for the suggestions. I did look at the router setup and also looked at network diagnostics. The router appears to be set up okay.
Signal strength for the WiFi bands is between -45 and -50 dBm everywhere in the house, and noise is between -88 and -91 dBm.
Both bands are set to auto select, and both bands are using unused bands in the area, and are the 'best bands' according to the diagnostics.
There are only 3 other WiFi routers I can see from my house, and 1 of those belong to my Time Machine. The WiFi router is not using the same bands as any other WiFi.
Transmission strength is set to 100% on both bands.
When I went to bed last night, I had 41% battery. This morning, 7 hours later, I had 20%. The screen was off and the phone should have been in sleep mode, yet it drained 21% battery. The usage in Settings->Battery shows Launcher3 as eating a lot more power than might be expected for a phone in sleep mode. I have tried using ONLY 2.4GHz and then ONLY 5GHz, which made no difference in battery consumption.
I am at a complete loss as to what is going on.
Regards,
maybe is not about wifi! did you tryed a foce doze app like naptime and a app-sleep app like servicely?
It is definitely something to do with the change in ISP/router. I was out of town the last 2.5 days and the phone went back to acting as it normally did before, lasting over two days on the charge, even while switching WiFi networks often. The hotel had 6 networks in both bands, and depending where you were on the property, one of them would be much stronger than the others. No issues whatsoever with battery drain on either band. I came home about an hour ago, and the battery has already drained 6%. This is after only using 3% since 0600 this AM until I got home.
@riccetto80 No, I haven't tried the apps because it wasn't doing this before and the trip proved it is not something that went bump with the phone hardware. I just need to figure out what is going on with the new router, as I am almost positive it is the problem. I have a couple of other things to try over the weekend, so hopefully will arrive at some kind of understanding at what the problem is. If no resolution, I will try the apps and see if they make a difference.
I *THINK* I might have figured this out. It may be a two part problem. I went into settings and set the location to Battery Saver vs. High Accuracy, set the Security to turn off the settings to not lock the phone for my home location and on my body, and went into the router and set the Beacon Period to 200 from 100. I tried 1000 and DTIM of 2, and 500 and a DTIM of 1, but that made the internet connection quite laggy, so backed it off to 200 and 1 on DTIM. (100 and 1 is default) These changes SEEM to have slowed the battery drain down considerably., only losing a few percent points in the 4 hours since the changes vs. 6% in an hour. It's funny because these settings were still active when I went out of town, so it may have something to do with the keep unlocked for the home location and the new router.
I'll report back if these don't fix the problem.
Follow up post:
The issue is some sort of conflict between the router and the Stay Unlocked at this Location setting. I went back into the router and set the Beacon back to 100, the default setting, but left the Stay Unlocked Setting off and the High Accuracy Location setting set to Battery Saving. The phone is now acting like it did previously, so I consider the problem solved. Where before it was using 6% in an hour, I have only used 5% in 6 hours with these settings.
So, if you are experiencing battery drain issues, one thing you might wish to try is to set Location to Battery Saving (middle selection) and make sure the Stay Unlocked settings are off. It is really no more of a pain to hit the fingerprint reader than to hit the power button to turn on the screen.
I hope this helps someone.

Categories

Resources